Rounding-machine tool for sole-cutting.



HO MODEL.

PATENTED AUG. 16, 1904. D..-F. HARTFORD.

ROUNDING MACHINE TOOL'FOR SOLE CUTTING.

APPLICATION FILED SEPT. 1, 1899. EENEWED MAY 1B. 1901.

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No. 767,754. PATENTED AUG. 16, 1904. D. I'. HARTFORD. ROUNDING MAOHINETOOL FOR SOLE CUTTING.

APPLICATION FILED SEPT. 1, 1999. BENBWED MAY 18. 1901. No MODEL, 2SHEETS-SHEET z,

55g? @Mf- MW UNITED STATES Patented August 16, 1904.

PATENT OEETCE.

DAVID F. HARTFORD, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPO- RATION OF NEWJERSEY.

ROUNDlNG-NIACHINE TOOL FOR SOLE-CUTTING.

SPECIFICATION forming part of Letters Patent No. r.767,754, dated August16, 1904.

i Application lefl September 1,1899. Renewed May'lS, 1901, Serial No.60,936. (No model.)

T0 a/ZZ whom, it 77mg/ concern:

Be it known that I, DAvID F'. HARTFORD, of

Boston, in the county of Suffolk and State of Massachusetts, haveinvented a new and useful Improvement in Rounding-Machine Tools forSole-Cutting, of which'the following is a specification.

In cutting soles by means of a pattern a rounding-machine has been usedhaving an oscillating block on which are mounted a gage and knife. As itis often desirable to be able to cut the soles a little larger than thepattern, either to compensate for the wear on the edge of the pattern orto give the sole an extra width, the position of the knife orknife-holder on the block has been adjusted. This method of adjustment,however, is not always satisfactory, for the reason that in thesemachines the block oscillates on its supporting-arm, and it is best thatthe knife-edge should always have a fixed relation to the axis ofoscillation, preferably a little in advance of it. Any adjustment of theknife changes this relation, and hence to that extent renders themachine less satisfactory.

My improvement is intended to overcome the difficulties referred to; andit consists in a tool for use in a rounding-machine having an adjustablegage, by means of which the relation of the knife-blade and the axis ofoscillation to the edge pattern may be adjusted according to therelation which itis desired to maintain between the size of the sole tobe cut and the pattern. This construction is especiallyuseful, becausewhere the main adjustment is secured by changing the position of thegage the knife-edge may be maintained in a substantially fixed positionwith relationto the axis of oscillation, and thus accomplish moreeconomical cutting results than if the movement of the knife were reliedon solely to compensate for the wear o'n the edge of the pattern or givethe sole an extra width. I have shown my invention in the drawings inits preferred form both applied to a wheelgage, such as is used inconnection with a sheet-metal pattern, and also to a non-rotating gage,such as is used when the pattern is of .tool having a permanent fiatgage.

vertical section on the line 2 2 of Fig. l. Fig'.

3 is a plan of the block. Fig. 4 is a plan of the same tool, the flatgage and the knifeholder having been substituted for the wheelgage` Fig.5 being a vertical section on the line 5 of Fig. 4 and Fig. 6 a detailin perspective showing the knife-holder and gage separated. Fig. 7 is aplan of the form of Fig. Sis

a vertical section on theline 8 8 of Fig. 7, and

Fig. 9 is a plan with the knife and knifeholder removed. Fig. 10 is afront elevation of this gage,showing especially the block common to allforms of the tool.

A is the arm of the rounding-machine, which, being well known to thoseskilled in the art, is not shown in full and need not be furtherdescribed, and B is the ordinary solepattern, which maybe thin, asindicated in Fig. 2, or may be thick, as indicated in Figs. 5 and 8.

The block, as is well known, consists of a portion C, which is attachedto the arm A of the rounding-machine by rivets a and which has twotrunnions, one, c, projecting from its upper side and the other, c,projecting from its under side. The trunnion c sets into a bearing in ayoke-piece c2, and the trunnion c sets into a bearing' in the plate D,the plateD and the yoke-piece c?. being suitably connected-'for example,by means of posts c3 c4.

In the combination-tool-by which I mean that form of rounding-machine inwhich the block carries a wheel-gage which is interchangeable with aflat gagethe preferred form of adjustment for the gage is as follows:The plate D has an opening CZ in-its central portion, in which slides onsuitable ways CZ a slide-piece E, carrying the stud F, forming an axisfor the w heel-gage G. The slide-piece IC has preferably in front of ita spring w, and an adjustiiig-screw w' bears against its rear, so thatby tu rning this adjlisting-screw in one direction the slide-piece E,carrying the gagewheel G', is moved forward, and upon withdrawing thescrew a the slide-piece is pushed back by the spring' n, lthis being'merely a con- 1 venient way of adjusting' the position of theslide-piece, and hence the g'age. From the plate D project upward twobosses /1/ lz, and to the top of these bosses is attached, by means ofscrews, the knife-holder H, which is preferably yoke-shaped, as shown inFig'. l, and serves not only as a knife-holder, but also to keep thewheel-gage G in place. It has a slot f, and its upper surface isgrooved. In this g'roove lies the washer t, through which the set-screw7a3 passes downward into the stud F to guide the slide-piece when it isbeing' adjusted and to set it in place after the adjustment has beenmade.

The front of the knife-holder is provided with a suitable opening y' andset-screw j', with which to set the knife J in place. rIhis constructionis such that when the set-screw t is loosened the position of thewheelwg'age may be adjusted either toward or from the pattern by turningthe screw c, and this will not affect the position of the knife, whichwill always be located with respect to the trunnions or axis of theblock in the place where it is first put. When adjusted', the set-screw/zfi is tightened again.

The relation of the pattern to the gage isy shown in Fig. Q, and it isvusual to build up the pattern by means of a form, on which is placedand clamped the leather, so that the leather will be at a proper levelto be acted upon by the knife J v In Figs. 4, and 6 I have shown thesame block and plate D carrying a flat gage in place of the wheel-gage,intended to be used with a thick pattern where there is no necessity forthe use of the form above referred to, the leather resting' directly onthe pattern. In this case the gage G is shaped as shown in perspectivein Fig. 6. It is provided with an opening' which sets over the stud Fupon the slide-piece E, and it is provided with a slot g, into whichsets a pin g on the under side of the knife-holder 'Hl to prevent itfrom turning'. The knife-holder H' differs from the knife-holder Hmainly because it is cut under, as shown in Fig 6 at g2, and the gage Gis thickened at g3 to iit into this cutting under of the knife-holder,so that these parts may be brought together by adjustment and the frontof the gage be made to lie in substantially the same plane with thefront side of the knife K without unduly weakening the parts. To aid inthis result, the knife shown has a shank which is flat on the inside andbeveled on its front side, as shown in Fig. to conform to the innersurface of the gage. The same result may be attained by bending theshank of the knife to a proper angle and providing the knife-holder witha socket of proper shape to receive and hold it. I prefer, however, touse a knife which has a shank fiat on the inside, as above described,and beveled on its front side, for in that case the position of theknife in the holder can be adjusted vertically without changing therelation of the edge of the blade to the axis of oscillation of theknife-holder. It will be noticed that in this case the knife-holder andflat gage are held in place by means of the same screws and parts thatwere used in holding the wheel-gage in place, as above described. Theoperation of this gage is the same as the operation of the wheel-gage.It is adjusted in and out by means of the screw c', it being kept inalinement not only by means of the stud F upon the slide-piece E, butalso by means of the slot g and pin g', and it is set after adjustmentby means of the washer L and set-screw 7a3.

This combination-tool is of value in those shops where both thin andthick patterns are used, and hence it is desirable to change from one tothe other; but in Figs. 7, 8, and 9 I have shown a simplied form of thisfiat gage, which will now be described. In this case the plate D isprovided with means for preventing' endwise movement of the set-screw c.As shown, these means consist of an opentopped journal or fork f, whichmay be formed in the end of a stud set into an opening in the plate D.The set-screw is provided with two collars @2 c, located to bear one oneach side of the journal f. The forward end of the set-screw passes intoa threaded opening' in the gage. The turning of the setscrewconsequently moves the gage out or in. The knife-holder H holds theknife in the same way as is shown in Fig. 5, although, as the stud F isdispensed with, the knifeholder is shaped slightly differently. The toolis, in fact, a simplilied form of the combination-tool, having theadjustable gage and the knife, which is non-adjustable. The gage being'fiat, the cut-under construction of the knife-holder and corresponding'shape of the rear of the gage allow the knife-holder and gage to bebrought in such relation that the plane of the gage will substantiallycoincide with the plane of the knife-edge, and this of course is, infact, dependent not upon which of the two parts is adjustable withrelation to the other, but' upon the fact that the knifeholder and theknife-shank are so shaped that they will allow the knife-edge and gageto be brought together in the manner described without weakening thegage.

I do not mean to limit myself to the precise form of construction shownin the drawings, for it is evident that the adjustment of the gag'e withrelation to the knife may be accomplished in other ways than that abovedescribed, as the essence of my invention consists in the relativeadjustment of the gage IOO IIO

and knife irrespective of the means by which this adjustment isaccomplished. The knife above described and shown in the drawings isalso of my invention, but will form the subject of a separateapplication.

What I claim as my invention isl. In a sole-rounding machine a pattern,a knife suitably mounted and a gage adapted to bear against saidpattern, in combination with means for adjusting the relative positionsof the gage and the cutting` edge of the knife.

2. In a sole-rounding machine a pattern, a knife suitably mounted and agage adapted to bear against said pattern and having its guiding edgeadapted to be located in substantially the plane of the cutting edge ofthe knife, in combination with means for adjusting the relativepositions of the guiding edge of the gage and the cutting edge of theknife.

3. In a sole-rounding machine, a knife suitably mounted and a gagehaving its guiding edge located in substantially the plane of thecutting edge of the knife and adjustable with relation to said plane, asand for the purposes set forth.

A. In a roundingmachine an oscillating block carrying a knife and agage, said gage having its guiding edge adjustable with relation to thecutting' edge of the knife, as described.

5. In a rounding-machine, a plate suitably mounted and carrying a knifestationary with relation to said plate, said plate also having a studadjustably located thereon and means whereby it maybe adjusted, saidstud carrying a gage also sliding on said plate, all as set forth.

6. In a rounding-machine, a plate suitably mounted and having a sliding'gage adjustably mounted thereon and a knife-holder mounted on said gagehaving a knife located in its front, the front edge of said knife-holderbeing cut under and the upper portion of said gage being thinned asdescribed, whereby it may be brought into substantially the samefertical plane with the cutting edge of the inife.

7. In a rounding-machine, in combination with a knife provided with ashank beveled on its front side as described, an oscillating blockcarrying a gage and a knife-holder, the one adjustable with relation tothe other, said gage being thin at its upper edge and said knife-holt erbeing' shaped as shown, whereby when said knife-holder and said gage arein contact, thecutting edge of said knife will be in substantially thesame plane with the front of said gage, as and for the purposes setforth.

In testimony whereofI have hereunto set my name this 28th day of August,1899.

DAVID F. HARTFORD.

Witnesses:

E. A. GUILD, K. T. BUTLER.

